package thread;

public class Demo19 {
    private static int count = 0;
    public static void main(String[] args) throws InterruptedException {
        //先创建出一个对象，使用这个对象作为锁

        Object locker = new Object();
        //变量捕获
        //locker 这个变量就会被 这两个lambda表达式捕获进来

        Thread t1 = new Thread(()->{
            for (int i = 0; i < 50000; i++) {
                synchronized (locker){
                    count++;
                }
            }
        });
        Thread t2 = new Thread(()->{
            for (int i = 0; i < 50000; i++) {
                synchronized (locker){
                    count++;
                }
            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println("count = " + count);
    }
}
